JP7287946B2 - 超吸収性ポリマー粒子の分級方法 - Google Patents
超吸収性ポリマー粒子の分級方法 Download PDFInfo
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- JP7287946B2 JP7287946B2 JP2020505182A JP2020505182A JP7287946B2 JP 7287946 B2 JP7287946 B2 JP 7287946B2 JP 2020505182 A JP2020505182 A JP 2020505182A JP 2020505182 A JP2020505182 A JP 2020505182A JP 7287946 B2 JP7287946 B2 JP 7287946B2
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- polymer particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/04—Stationary flat screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
- B07B13/14—Details or accessories
- B07B13/16—Feed or discharge arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
- B01J20/261—Synthetic macromolecular compounds obtained by reactions only involving carbon to carbon unsaturated bonds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
- B07B11/02—Arrangement of air or material conditioning accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
- B07B4/08—Separating solids from solids by subjecting their mixture to gas currents while the mixtures are supported by sieves, screens, or like mechanical elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F20/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
- C08F20/02—Monocarboxylic acids having less than ten carbon atoms, Derivatives thereof
- C08F20/04—Acids, Metal salts or ammonium salts thereof
- C08F20/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/50—Aspects relating to the use of sorbent or filter aid materials
- B01J2220/68—Superabsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B2220/00—Type of materials being separated
- B07B2220/02—Plastics
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2300/00—Characterised by the use of unspecified polymers
- C08J2300/14—Water soluble or water swellable polymers, e.g. aqueous gels
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Description
本発明は、吸水性ポリマー粒子を、減圧下にてスクリーン機内で分級することを含む、超吸収性ポリマー粒子の分級方法であって、最上部の篩の上の圧力が、最下部の篩の下の圧力よりも篩ごとに0~4.0ミリバール高い、方法に関する。
a)酸基を有し、かつ少なくとも部分的に中和され得る少なくとも1種のエチレン性不飽和モノマー、
b)少なくとも1種の架橋剤、
c)少なくとも1種の開始剤、
d)任意で、a)に記載されたモノマーと共重合可能な1種以上のエチレン性不飽和モノマー、および
e)任意で、1種以上の水溶性ポリマー
を含み、かつ典型的には水不溶性である、モノマー溶液または懸濁液を重合することにより生成され得る。
例1(比較例)
脱イオン水、50重量%の水酸化ナトリウム溶液およびアクリル酸を連続的に混合することにより、中和度が71.3モル%に相当するように、アクリル酸/アクリル酸ナトリウム溶液を調製した。モノマー溶液の固形分は、38.8重量%であった。
最上部の篩の上の圧力が最下部の篩の下の圧力よりも20ミリバール(篩ごとに5ミリバール)高いことを除いて、例1を繰り返した。
最上部の篩の上の圧力が最下部の篩の下の圧力よりも8ミリバール(篩ごとに2ミリバール)高いことを除いて、例1を繰り返した。
最上部の篩の上の圧力が最下部の篩の圧力と同じであることを除いて、例1を繰り返した。
Claims (15)
- 超吸収性ポリマー粒子の分級方法であって、吸水性ポリマー粒子を、減圧下で少なくとも2つのスクリーンを有するスクリーン機を使用して分級し、最上部の篩の上の圧力が、最下部の篩の下の圧力よりも篩ごとに0.05~3.5ミリバール高い、方法。
- 最上部の篩の上の圧力が、最下部の篩の下の圧力よりも篩ごとに0.25~2.5ミリバール高い、請求項1記載の方法。
- 最上部の篩の上の圧力が、周囲圧力より少なくとも2ミリバール低い、請求項1または2記載の方法。
- 製品画分が、異なるメッシュサイズの少なくとも2つのスクリーンによって除去される、請求項1から3までのいずれか1項記載の方法。
- オーバーサイズが、異なるメッシュサイズの少なくとも2つのスクリーンによって除去される、請求項1から4までのいずれか1項記載の方法。
- 超吸収性ポリマー粒子が、分級中、40~120℃の温度を有する、請求項1から5までのいずれか1項記載の方法。
- 超吸収性ポリマー粒子が、分級中、ガス流により流される、請求項1から6までのいずれか1項記載の方法。
- ガス流の含水量が、5g/kg未満である、請求項7記載の方法。
- ガス流が、少なくとも40℃の温度を有する、請求項7または8記載の方法。
- ガス流が空気である、請求項7から9までのいずれか1項記載の方法。
- スクリーン機が、部分的または全体的に断熱されている、請求項1から10までのいずれか1項記載の方法。
- エチレン性不飽和モノマーa)の総量におけるアクリル酸の割合が、少なくとも95モル%である、請求項1から11までのいずれか1項記載の方法。
- エチレン性不飽和モノマーa)の中和度が、65~80モル%である、請求項1から12までのいずれか1項記載の方法。
- モノマーa)を基準とした架橋剤b)の量が、0.2~0.6重量%である、請求項1から13までのいずれか1項記載の方法。
- 超吸収性ポリマー粒子が、少なくとも15g/gの遠心分離保持能力を有する、請求項1から14までのいずれか1項記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17183912.9 | 2017-07-31 | ||
EP17183912 | 2017-07-31 | ||
PCT/EP2018/069770 WO2019025210A1 (en) | 2017-07-31 | 2018-07-20 | PROCESS FOR PRODUCING SUPERABSORBENT POLYMER PARTICLES |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2020537698A JP2020537698A (ja) | 2020-12-24 |
JP7287946B2 true JP7287946B2 (ja) | 2023-06-06 |
Family
ID=59564093
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2020505182A Active JP7287946B2 (ja) | 2017-07-31 | 2018-07-20 | 超吸収性ポリマー粒子の分級方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US11883848B2 (ja) |
EP (1) | EP3661662A1 (ja) |
JP (1) | JP7287946B2 (ja) |
KR (1) | KR20200036858A (ja) |
CN (1) | CN110799275A (ja) |
TW (1) | TWI806887B (ja) |
WO (1) | WO2019025210A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3697457B1 (de) | 2017-10-18 | 2021-07-07 | Basf Se | Verfahren zur herstellung von superabsorbern |
US11813589B2 (en) | 2017-11-10 | 2023-11-14 | Basf Se | Superabsorbent complexed with aluminum ions |
JP6771633B1 (ja) * | 2019-05-30 | 2020-10-21 | ユニ・チャーム株式会社 | 使用済み吸収性物品由来の高吸水性ポリマーを再生する方法及び使用済み吸収性物品由来のリサイクル高吸水性ポリマー |
Citations (2)
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2018
- 2018-07-20 WO PCT/EP2018/069770 patent/WO2019025210A1/en unknown
- 2018-07-20 EP EP18740860.4A patent/EP3661662A1/en active Pending
- 2018-07-20 KR KR1020207002458A patent/KR20200036858A/ko not_active Application Discontinuation
- 2018-07-20 JP JP2020505182A patent/JP7287946B2/ja active Active
- 2018-07-20 US US16/630,873 patent/US11883848B2/en active Active
- 2018-07-20 CN CN201880043187.XA patent/CN110799275A/zh active Pending
- 2018-07-30 TW TW107126269A patent/TWI806887B/zh active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011115221A1 (ja) | 2010-03-17 | 2011-09-22 | 株式会社日本触媒 | 吸水性樹脂の製造方法 |
WO2014021432A1 (ja) | 2012-08-01 | 2014-02-06 | 株式会社日本触媒 | ポリアクリル酸(塩)系吸水性樹脂の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
CN110799275A (zh) | 2020-02-14 |
KR20200036858A (ko) | 2020-04-07 |
EP3661662A1 (en) | 2020-06-10 |
US11883848B2 (en) | 2024-01-30 |
TWI806887B (zh) | 2023-07-01 |
US20200147652A1 (en) | 2020-05-14 |
WO2019025210A1 (en) | 2019-02-07 |
JP2020537698A (ja) | 2020-12-24 |
TW201910014A (zh) | 2019-03-16 |
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